Mighty Thor (2015) #12

Origin of Mjolnir

"The Untold Origin of Mjolnir"

Forged from the mystical metal known as Uru, Thor's Hammer is the key to a power that only the worthy can wield. But what makes one worthy to carry this weapon? Is it destiny? Or does the hammer choose its partner? Discover the storied history of Thor's greatest ally: The MIGHTY MJOLNIR!